波导

It was found that the pulse distortion can be quite severe depending on frequency, pulse width ,and path length.

应用傅立叶时域积分近似解方法对毫米脉冲波通过雨媒质时的传输特性进行了研究和分析，得出了脉冲畸变随频率、降雨率、脉冲宽度及传播距离的变化关系，讨论了脉冲展宽与压缩随传播常数二阶导数的关系。

The results show that carefully controlling of deposition conditions and final polishing of the specimens enable us to deposit antireflective infrared diamond coatings on silicon substrate. In order to investigate the thermal properties of diamond coatings nondestructive photo-thermal radiometry method is used with computer simulation and data analysis to get thermal diffusivity and conductivity of the specimens.

本文用光热辐射计量学（Photo-Thermal Radiometry，PTR）方法对于金刚石薄膜的热学特性作了研究，用计算机模拟了热波在样品中的传播过程，用非接触无损检测方法测量了样品，并对测量结果用计算机作数据分析，计算获得金刚石薄膜的热扩散系数及热导率，为金刚石薄膜在热学方面的应用打下了基础。

The elements of optical waveguide strain-stress measurement and fiber bragg grating strain-stress measurement system based on wavelength division multiplexing and spatial division multiplexing are emphatically discussed; the displacement regularity of stress field induced by roadway group excavating and short wall mining process is analyzed in detail; the concept of roadway "equivalent radius","correcting coefficient of coal and rock mass mechanical parameters",and "mining affecting coefficient" is put forward; the calculation method of "equivalent radius", the method of inversion of "correcting coefficient of coal and rock mass mechanical parameters", and the "mining affecting coefficient" determination method with the field measurement results and so on are provided.

重点研究了光波导应力应变测量原理，以及基于波分复用和空分复用技术基础上的布拉格光纤光栅应力应变测量体系；详细分析了近距离巷道群开掘工作和短壁体系回采工作诱发的应力场的重新分布规律；提出了巷道"当量半径"、"煤岩体力学参数修正系数"、"采动影响系数"等概念；给出了"当量半径"的计算方法、"煤岩体力学参数修正系数"的反分析求算方法、以及通过现

The stability problem leads to an ordinary differen-tial equation containing three parameters representing partialderivatives of a phase function.

一个非定常流动的稳定性问题被归结为求解三个未知函数为参数的微分方程的特征值，其三个参数分别是非线性扰动波的相函数的导数及圆盘运动速度的函数。

Gaussian function through derivative edge detection in real terms is Steerable Wavelet image edge detection.

详细说明：通过高斯函数导数检测图像边缘，实质是方向可调小波变换检测图像边缘。

What leads should be utilized to analyze P wae information?

分析P波信息时应该使用哪个导联？

The circumferential interference is found to be an essential mechanism in determining the transport properties of the carbon nanotubes.

我们指出周长方向的波函数干涉是影响碳纳米管电导的重要因素。

2 prelingual and 2 postlingual deaf patients were tested with promontory stimulation for electric hearing threshold, maximum comfortable level and gap detection.Pre and postoperative speech performance were evaluated with semi-quantitative method designed by the author.

选语前及语后聋患者各2例，测试每秒50、100及200次脉冲率方波的电听觉阈值、最大舒适水平及间隔辨别力，4例患者均植入Nucleus22导人工耳蜗装置，术前及术后言语康复训练后以半定量方法进行言语可懂度主观评价。

The output of quartzose accelerometer used in GFSINS(gyroscope-free strapdown inertial navigation system) drifts significantly in different temperature conditions,the theory analiysis and a large number of tests are made for its static temperature characteristics by the use of wavelet neural networks compensation.

无陀螺捷联惯导系统中所使用的石英加速度计的输出在不同温度条件下漂移比较显著，通过理论分析和试验研究了其静态温度特性，提出了利用小波神经网络进行补偿的方案。

The calculation results shows that ,(1) when the rotor rotates at the working speed, a local regurgitant whirlpool that is rightabout to the rotor"s rotating direction appears in the classifying region, which makes the separated granules come back to the outside of the classification district and influences the classification efficiency of the turbine classifier;(2) in the condition of a low rotating speed of turbo rotor, ultrafine particles can follow the gas phase by and large, but when the rotating speed increases, a phenomenon of velocity slippage between two phases appears evidently;(3) A operating parameter, air flow rate is so important that can directly influence the stability of flow field in classifying chamber, the bigger the air flowrate is , the steadier the flow field is;(4) Compared with straight blades, the new shape of blades with backward crooked elbow are helpful to improve the stability of flow field and form whole stream easily, also beneficial to advance the classification accuracy and classification efficiency;(5) The motion trace of particles are very complicated when the turbo rotor rotates at a high speed, the constant bounce of the particles appear between the blades and the coarse particles are even bounce back from the inlet, only the finer can pass through the classification area from the oulet;(6) Along with the increase of the rotor"s rotating speed, radiah axial and tangential velocity all begain to fluctuate repetitively like sine-wave, the smaller the particles are, the more violently they fluctuates.

数值模拟结果表明，(1)在涡轮达到工作转速时，在分级区域形成了一个与涡轮旋转方向相反的局部回流涡，它使得分离出来的细粒重又被带回分级轮外边缘，从而严重影响分级机的分级效率；(2)粉尘粒子在涡轮低速运动情况下，基本上能跟随气体运动，但随着转速加大，两相之间出现了明显的速度滑移现象；(3)分级机工作时的风量也是一个比较重要的操作参数，它可以直接影响到分级机内腔流场的稳定性，风量越大，流场越稳定；(4)同直叶片形状相比较，带后弯导板的叶片，有利于改善流场的稳定性，流场容易形成整体流，对提高分级效率和分级精度都非常有利；(5)粒子轨迹线在涡轮转速较高时十分复杂，有的出现了反复的弹跳现象，大颗粒不能通过分级区域而从进口返流了，只有细小的颗粒才从出口处流出；(6)涡轮转速加大时，粒子的径向、轴向和切向速率出现了明显的类似于正弦波的脉动现象，颗粒越小，脉动程度越为剧烈。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。